Home / 30,545.68-42,154.56-18,607.12

Finding the Fourth Proportional to 30,545.68, 42,154.56 and 18,607.12

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Solution

The fourth proportional to 30,545.68, 42,154.56 and 18,607.12 is: 25,678.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,545.68 : 42,154.56 = 18,607.12 : x
  2. Step 2: Convert to fraction form
    30,545.68/42,154.56 = 18,607.12/x
  3. Step 3: Cross multiply
    30,545.68x = 42,154.56 × 18,607.12
  4. Step 4: Simplify right side
    30,545.68x = 784,374,956.47
  5. Step 5: Solve for x
    x = 784,374,956.47/30,545.68
  6. Step 6: Final answer
    x = 25,678.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.